StringComparator.java |
1 /** 2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved. 3 * 4 * 5 * 6 * 7 * The contents of this file are subject to the terms of the Liferay Enterprise 8 * Subscription License ("License"). You may not use this file except in 9 * compliance with the License. You can obtain a copy of the License by 10 * contacting Liferay, Inc. See the License for the specific language governing 11 * permissions and limitations under the License, including but not limited to 12 * distribution rights of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 20 * SOFTWARE. 21 */ 22 23 package com.liferay.portal.kernel.util; 24 25 import java.io.Serializable; 26 27 import java.util.Comparator; 28 29 /** 30 * <a href="StringComparator.java.html"><b><i>View Source</i></b></a> 31 * 32 * @author Brian Wing Shun Chan 33 */ 34 public class StringComparator implements Comparator<String>, Serializable { 35 36 public StringComparator() { 37 this(true, false); 38 } 39 40 public StringComparator(boolean asc, boolean caseSensitive) { 41 _asc = asc; 42 _caseSensitive = caseSensitive; 43 } 44 45 public int compare(String s1, String s2) { 46 if (s1 == null) { 47 s1 = StringPool.BLANK; 48 } 49 50 if (s2 == null) { 51 s2 = StringPool.BLANK; 52 } 53 54 if (!_asc) { 55 String temp = s1; 56 57 s1 = s2; 58 s2 = temp; 59 } 60 61 if (_caseSensitive) { 62 return s1.compareTo(s2); 63 } 64 else { 65 return s1.compareToIgnoreCase(s2); 66 } 67 } 68 69 private boolean _asc; 70 private boolean _caseSensitive; 71 72 }